prosecutor strunsky also needed to explain why lindsay patterson didn't see cristi's body when she looked over the wall the second time? >> we were not able to explain to the jury why she didn't see cristi at that point, and i think that allowed the defense to make the argument that cristi hall was inside. >> the prosecution hired a water expert to do a recreation of the hall spa. she's been assisting law enforcement with drowning investigations for 20 years. she got in the spa. >> from the center of the pool and towards where lindsay was standing, anywhere i was laying, you could not be seen from lindsay's viewpoint. so once i sank below the surface and hit that bottom, you could not see me at all from lindsay's viewpoint. >> and now the prosecutor was ready.